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changeset 13371:d4438aa5ada1

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Don't use conversion with transliteration in u{8,16,32}_strcoll.
author Bruno Haible <bruno@clisp.org>
date Mon, 24 May 2010 23:00:42 +0200
parents aac0d7011945
children bae0f3b1579a
files ChangeLog lib/unistr/u-strcoll.h lib/unistr/u16-strcoll.c lib/unistr/u32-strcoll.c lib/unistr/u8-strcoll.c modules/unistr/u16-strcoll modules/unistr/u32-strcoll modules/unistr/u8-strcoll
diffstat 8 files changed, 46 insertions(+), 16 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,25 @@
+2010-05-24  Bruno Haible  <bruno@clisp.org>
+
+	Don't use conversion with transliteration in u{8,16,32}_strcoll.
+	* lib/unistr/u-strcoll.h (FUNC): Use U_STRCONV_TO_ENCODING with
+	iconveh_error argument.
+	* lib/unistr/u8-strcoll.c: Define U_STRCONV_TO_ENCODING instead of
+	U_STRCONV_TO_LOCALE.
+	* lib/unistr/u16-strcoll.c: Likewise.
+	* lib/unistr/u32-strcoll.c: Likewise.
+	* modules/unistr/u8-strcoll (Depends-on): Add
+	uniconv/u8-strconv-to-enc, localcharset. Remove
+	uniconv/u8-strconv-to-locale.
+	(configure.ac): Bump version number.
+	* modules/unistr/u16-strcoll (Depends-on): Add
+	uniconv/u16-strconv-to-enc, localcharset. Remove
+	uniconv/u16-strconv-to-locale.
+	(configure.ac): Bump version number.
+	* modules/unistr/u32-strcoll (Depends-on): Add
+	uniconv/u32-strconv-to-enc, localcharset. Remove
+	uniconv/u32-strconv-to-locale.
+	(configure.ac): Bump version number.
+
 2010-05-24  Bruno Haible  <bruno@clisp.org>
 
 	Avoid a test failure on NetBSD 5.0.
--- a/lib/unistr/u-strcoll.h
+++ b/lib/unistr/u-strcoll.h
@@ -23,14 +23,19 @@
      When it fails, it sets errno, but also returns a meaningful return value,
      for the sake of callers which ignore errno.  */
   int final_errno = errno;
+  const char *encoding = locale_charset ();
   char *sl1;
   char *sl2;
   int result;
 
-  sl1 = U_STRCONV_TO_LOCALE (s1);
+  /* Pass iconveh_error here, not iconveh_question_mark.  Otherwise the
+     conversion to locale encoding can do transliteration or map some
+     characters to question marks, leading to results that depend on the
+     iconv() implementation and are not obvious.  */
+  sl1 = U_STRCONV_TO_ENCODING (s1, encoding, iconveh_error);
   if (sl1 != NULL)
     {
-      sl2 = U_STRCONV_TO_LOCALE (s2);
+      sl2 = U_STRCONV_TO_ENCODING (s2, encoding, iconveh_error);
       if (sl2 != NULL)
         {
           /* Compare sl1 and sl2.  */
@@ -41,10 +46,10 @@
               /* strcoll succeeded.  */
               free (sl1);
               free (sl2);
-              /* The conversion to locale encoding can do transliteration or
-                 map some characters to question marks.  Therefore sl1 and sl2
-                 may be equal when s1 and s2 were in fact different.  Return a
-                 nonzero result in this case.  */
+              /* The conversion to locale encoding can drop Unicode TAG
+                 characters.  Therefore sl1 and sl2 may be equal when s1
+                 and s2 were in fact different.  Return a nonzero result
+                 in this case.  */
               if (result == 0)
                 result = U_STRCMP (s1, s2);
             }
@@ -68,7 +73,7 @@
   else
     {
       final_errno = errno;
-      sl2 = U_STRCONV_TO_LOCALE (s2);
+      sl2 = U_STRCONV_TO_ENCODING (s2, encoding, iconveh_error);
       if (sl2 != NULL)
         {
           /* s2 could be converted to locale encoding, s1 not.  */
--- a/lib/unistr/u16-strcoll.c
+++ b/lib/unistr/u16-strcoll.c
@@ -29,5 +29,5 @@
 #define FUNC u16_strcoll
 #define UNIT uint16_t
 #define U_STRCMP u16_strcmp
-#define U_STRCONV_TO_LOCALE u16_strconv_to_locale
+#define U_STRCONV_TO_ENCODING u16_strconv_to_encoding
 #include "u-strcoll.h"
--- a/lib/unistr/u32-strcoll.c
+++ b/lib/unistr/u32-strcoll.c
@@ -29,5 +29,5 @@
 #define FUNC u32_strcoll
 #define UNIT uint32_t
 #define U_STRCMP u32_strcmp
-#define U_STRCONV_TO_LOCALE u32_strconv_to_locale
+#define U_STRCONV_TO_ENCODING u32_strconv_to_encoding
 #include "u-strcoll.h"
--- a/lib/unistr/u8-strcoll.c
+++ b/lib/unistr/u8-strcoll.c
@@ -29,5 +29,5 @@
 #define FUNC u8_strcoll
 #define UNIT uint8_t
 #define U_STRCMP u8_strcmp
-#define U_STRCONV_TO_LOCALE u8_strconv_to_locale
+#define U_STRCONV_TO_ENCODING u8_strconv_to_encoding
 #include "u-strcoll.h"
--- a/modules/unistr/u16-strcoll
+++ b/modules/unistr/u16-strcoll
@@ -8,10 +8,11 @@
 Depends-on:
 unistr/base
 unistr/u16-strcmp
-uniconv/u16-strconv-to-locale
+uniconv/u16-strconv-to-enc
+localcharset
 
 configure.ac:
-gl_LIBUNISTRING_LIBSOURCE([0.9.3], [unistr/u16-strcoll.c])
+gl_LIBUNISTRING_LIBSOURCE([0.9.4], [unistr/u16-strcoll.c])
 
 Makefile.am:
 
--- a/modules/unistr/u32-strcoll
+++ b/modules/unistr/u32-strcoll
@@ -8,10 +8,11 @@
 Depends-on:
 unistr/base
 unistr/u32-strcmp
-uniconv/u32-strconv-to-locale
+uniconv/u32-strconv-to-enc
+localcharset
 
 configure.ac:
-gl_LIBUNISTRING_LIBSOURCE([0.9.3], [unistr/u32-strcoll.c])
+gl_LIBUNISTRING_LIBSOURCE([0.9.4], [unistr/u32-strcoll.c])
 
 Makefile.am:
 
--- a/modules/unistr/u8-strcoll
+++ b/modules/unistr/u8-strcoll
@@ -8,10 +8,11 @@
 Depends-on:
 unistr/base
 unistr/u8-strcmp
-uniconv/u8-strconv-to-locale
+uniconv/u8-strconv-to-enc
+localcharset
 
 configure.ac:
-gl_LIBUNISTRING_LIBSOURCE([0.9.3], [unistr/u8-strcoll.c])
+gl_LIBUNISTRING_LIBSOURCE([0.9.4], [unistr/u8-strcoll.c])
 
 Makefile.am: